Well, there is more than one way to tackle this.
Choose an acceptable time that is not night-time anymore, say like 6.30. Everything before that you treat like a night-time feed with very little stimulation (mo light, no change, no eye-contact, no talking).
If she wakes up say 5 am, you feed her and then put her back to bed awake until it's an acceptable time to wake up. If it's past 7, you can wake her up.
We tried that but what we got was Mr. Grumpy Sausage so we now let him sleep as long as he wants, but don't start the day before 6.30. Everything before that is night-time.
Now he sometimes wakes up at 6.30, sometimes at 7 and sometimes at 7.30. That changes the whole day but works for us anyway. We just stick to Eat, Activity and Sleep but not really to the time and he is the happiest baby you can have.
I mean... if I am hungry at 7 and wake up and the next day it's 6.30 I don't force myself to stay in bed either. And sometimes we sleep longer and sometimes we don't. Depending on the baby's temper an strict schedule can be very good. For our angel baby it isn't.
I would just try both...